CN107735329B - Rubber rollers with defined gluing areas - Google Patents

Abstract

The present invention relates to a labeling device for applying a label to a container, the labeling device comprising a gluing device having a glue roller (301) and a gluing unit (372) assigned to the glue roller, the gluing unit being used to apply glue to the glue roller, wherein the gluing unit has at least one accommodating space for accommodating glue, and wherein the glue roller and/or the gluing unit are constructed and arranged relative to each other in such a way that the glue located in the accommodating space is applied to the surface of the glue roller only in one or more partial areas of the surface of the glue roller over the entire range viewed along the axial direction of the glue roller.

Description

Rubber rollers with defined gluing areas

technical field

The invention relates to a device and a method for the targeted application of glue to labels of containers, in particular of jars, glass bottles, PET bottles, etc., in a labeling device.

Background technique

Labeling machines are used in the beverage processing industry to continuously and efficiently apply labels to continuously conveyed goods or containers. In this regard, the container may be a jar, a glass bottle, a plastic bottle or the like. In addition to self-adhesive labels, labels are also known to which glue is first applied in order to subsequently attach the glued label to the container. A suitable glue is applied to the back of the label, for example via a gluing device with a glue roller. This can be done directly, ie glue is applied by means of a glue roller to the label which is passed by the glue roller by means of a vacuum cylinder. However, it can also be done indirectly, that is, the glue is first transferred by means of rubber rollers to the arc-shaped suction surfaces of the removal elements, the so-called pallets, which pass by the rollers in an oscillating or rotating manner, the removal elements themselves from the The labels are removed individually from the label stack, wherein the labels are provided with the previously transferred glue on the back side during removal. The label, now glued, is then passed to a rotating gripper cylinder, etc., from where the label is passed onto the container.

In both cases, first the required glue must be transferred from the glue storage container to the glue roller. For this purpose, the glue is usually pumped from a storage container to the glue application unit by means of a pump and applied to the glue roller over its entire axial extent. DE 3022040A1, for example, describes a rubber roller to which a gluing element and an adjustable doctor blade are assigned. For this purpose, the glue pumped from the storage container is applied to the glue roller by means of a doctor blade. Usually, the scraper is configured to be pivotable and tangent to the rubber roller in the axial direction of the rubber roller. For this, the positioning of the squeegee on the rubber roller is very important for optimum labeling results. When the glue is applied to the rubber roller, a so-called glue line is formed which extends over the entire height of the rubber roller.

The problem with this embodiment is that when the labeling machine is stopped, the glue line left on the glue roller dries out and is sometimes difficult to remove. Furthermore, in such systems there is the risk that the glue changes its chemical structure and/or composition as a result of contact with ambient air, in particular with atmospheric oxygen. Furthermore, the glue line in known systems extends over the entire height of the glue roller, ie over the axial extent of the glue roller, so that the applied glue is not completely taken up by the generally smaller labels or trays. The unreceived glue will again dry out or change its properties on the rubber roller.

Contents of the invention

It is therefore an object of the present invention to provide a gluing device for a labeling device, in which glue is advantageously applied only in the amount actually required. Furthermore, it is an object of the invention to be able to set different operating states of the labeling device, for example labeling mode, standstill mode, cleaning mode, etc., particularly simply and advantageously. In general, the object of the invention is to reduce the glue consumption and prolong the service life of a labeling device.

The above objects are achieved by a labeling device for applying labels to containers, the labeling device comprising a gluing device having a rubber roller and a gluing unit assigned to the rubber roller, the gluing unit being used to apply glue on the glue On the roller, wherein the gluing unit has at least one accommodating space for accommodating the glue, and wherein the glue roller and/or the gluing unit are constructed and arranged relative to each other such that the glue located in the accommodating space is only on the surface of the glue roller It is applied to the surface of the rubber roller in one or more partial areas of the entire range viewed along the axial direction of the rubber roller.

The labeling device for applying the label to the container can in principle be any labeling device known in the prior art, which has a glue roller in order to apply the glue directly or indirectly as described above. onto the label to be pasted. As previously mentioned, the container may be a jar, a glass bottle, a plastic bottle, especially a PET bottle, or the like. The labeling device may in particular comprise one or more known elements such as a container conveyor, a container table, a container outlet star line, a dispensing auger with one or two label tape axes, a label conveyor, a cutting device, a vacuum roller and vacuum/gripper cylinders, or labeling equipment with label cassettes, pallet carousels or take-out element carriers, corresponding trays or take-off elements, including control eccentrics, if required, and gripper cylinders, etc. The aforementioned elements are known in the prior art and therefore will not be described in detail here. In addition, exemplary embodiments of these labeling devices will be described in detail with reference to the accompanying drawings.

Furthermore, the labeling device can be provided as part of a machine assembly together with other components, for example a filling machine for filling the containers. In the context of the present invention, a machine assembly is understood as meaning at least the machines for filling, closing and labeling comprised by the machine assembly are fixed on a common frame and/or their frames can be connected to each other in a mechanically position-fixed manner for production operation , such as by screwing, clamping, etc. A rack can consist of a single machine of a mechanical assembly, an operating unit and/or a plurality of modules which can be fixedly connected to one another, a mounting platform etc. for switching star lines.

Accordingly, containers can be transferred between the individual machines of the machine assembly in a space-saving and precise manner by means of a switching star, eg an inlet star and an outlet star, a conveying worm or the like.

Preferably, the mechanical assembly can also comprise a stretch blow molding machine configured upstream of the filling machine for producing containers made of plastic, in particular PET. This enables a particularly compact design, reduces the risk of contamination of the containers on the way to the filling machine, and reduces the number of machines connected to the filling machine.

Preferably, the mechanical assembly may comprise an inspection unit and/or a rinsing machine for containers made of glass upstream of the filling machine. This enables a particularly compact design and reduces errors during transport and/or due to contamination of the containers between the inspection unit, rinser and filling machine. Preferably, the filling machine, the sealing machine and the labeling machine can be configured as cycle machines with continuous container transport, especially in this sequence. This achieves a high mechanical efficiency of the mechanical assembly.

Preferably, the filling machine, the sealing machine and the labeling machine can be directly coupled to one another in terms of conveying technology by means of a switching star, for example an inlet star, an outlet star, a transport star or the like. Furthermore, there may be a distribution worm or the like between the outlet star and the inlet star. Preferably, additional machines of the mechanical assembly, such as stretch blow molding machines, can be coupled in the same manner in terms of conveying technology.

The labeling device can be designed in a modular manner, so that the labeling device is also suitable for sticker-shaped labels. It is advantageous to implement it as a modular labeling device. For this purpose, the labeling device is docked exchangeably and movably on rollers at the periphery of the machine, in particular at a height-adjustable, floor-supported, non-ground-supported and/or suspended device receptacle. at the mechanical rotating disk.

According to the invention, the gluing device has a glue roller, which can be driven in rotation as known, and for which glue is received by a gluing unit assigned to the glue roller, and then the glue is either directly transferred to the label or firstly Pallets passed to the pallet carousel. For this purpose, the gluing unit is arranged on the circumference of the rubber roller at a position in front of the labels or trays during the revolution of the rubber roller. The cot has a cylindrical mantle which rotates about an axis of rotation arranged along the longitudinal axis of the cot. For this purpose, the rubber roller can be rotated by means of an open-loop and/or closed-loop controllable drive, for example in the form of an adjustable electric motor. Therefore, in the axial direction of the rubber roller, there is the surface of the rubber roller, that is, the maximum range of the cover surface, and the surface can be provided with glue. This generally corresponds to the height of the cylindrical part of the rubber roller. The terms "surface" and "cover" are used here and below intentionally separately because, as will also be described below, the surface of the rubber roller may differ slightly from the strictly cylindrical cover of the rubber roller in order to accommodate the glue-receiving portion. Restricted to a well-defined partial area.

According to the invention, the gluing unit has one or more receiving spaces in the form of cavities for accommodating glue, as is the case, for example, with the cavity squeegee described further below. For this purpose, the glue is conveyed from the glue storage container to the receiving space by means of one or more conveying pipes for glue, so that the glue can be delivered from the receiving space which is open on the roller side during operation to the surface of the rubber roller. For example, the glue can be removed from the glue storage container by means of a glue pump and pumped into the receiving space via a transport line. In particular, the glue can be delivered in an open-loop and/or closed-loop controlled manner depending on the required glue quantity, for example by providing an adjustable glue pump.

According to the invention, the rubber roller and/or the gluing unit are constructed and arranged relative to each other such that the glue in at least one receiving space is only applied to the glue in one or more subregions of the axial extent of the cover of the rubber roller. The surface of the roller may or may not contain glue. This means that part of the axial extent of the cover is not provided with glue. In particular, this section extends beyond the section where no glue can normally be provided due to the structure, for example due to the thickness of the seal (described below) defined by the receiving space. Therefore, the axial extent of the partial region provided with glue is significantly smaller than the axial extent of the cover surface of the rubber roller where the most glue can be arranged. In particular, it can be set that the axial extent (the sum) of the partial regions of the glue is less than or equal to 90%, preferably less than or equal to 80%, more preferably less than or equal to 70% of the height of the cover.

Glue is applied only in one or more subregions of the axial extent of the surface of the reference rubber roller, for example by suitable design of the rubber roller, for example by the contact section described next, and/or by the gluing unit, for example by the following The described spatially separated receiving spaces or controllable slides with two or more sections are also realized. It is conceivable for this that either the glue roller or the gluing unit, due to its special design, confines the glue layer to a partial area, whereas the other element can be provided with a larger glue layer in its axial extent. Partial areas can thus be changed, shifted or redefined by adjusting the configuration, for example by replacing, by specially actuating or adjusting the relative arrangement of rubber rollers and gluing units, as will be described in detail below. On the other hand, the rubber roller and the gluing unit can also be designed to match each other such that the subregions defined by their design correspond to each other. It should be understood that the glue roller and the gluing unit are arranged relative to each other such that glue can be applied in partial regions of the surface of the glue roller by means of the gluing unit. For example, in labeling mode, the receptacle of the gluing unit is oriented tangentially in the axial direction of the rubber roller, so that the receptacle extends over the axial region of the partial region of the surface of the glue roller to be glued. The distance between the gluing unit and the surface of the glue roller is set in labeling mode, for example by adjusting the gluing unit to the surface by means of a pneumatic cylinder, so that the glue in the receiving space is reliably applied to the surface of the glue roller.

The glue can be hot glue, UV glue or cold glue. Particularly advantageously, the device according to the invention is used for applying cold glue, especially viscous cold glue, for example casein glue or dextrin glue. Alternatively, the device is also used to apply the dispersion gel. The device according to the invention is used not only for thin glues, glues with a viscosity between 600 mPas and 8000 mPas, but also for casein glues or dispersion glues with an optimum processing temperature of 18° C. to 34° C.

According to a further development, the rubber roller can have at least one contact section axially corresponding to one or more subregions, which is configured such that the contact section holds the glue in relation to the rubber roller when it comes into contact with the gluing unit. One or more recesses in which the cover surface is retracted radially. The term "radial" here and below refers to the radius of the cylindrical cover of the rubber roller. According to this refinement, depressions are formed locally in the surface of the rubber roller, the distance of the depressions from the axis of rotation of the rubber roller being smaller than the radius of the cover. As a result, the glue delivered by the gluing unit can preferably collect in a contact section configured in this way, whereby one or more of the aforementioned subregions can be defined. The depression can, for example, have a depth (for example a radial deviation from the radius of the cover) of between 0.02 and 0.08 mm, preferably between 0.03 and 0.05 mm. For this purpose, the depressions can be formed uniformly with a smooth bottom or be configured as described in detail below.

The term "contact section" here and below denotes any section of the surface of the rubber roller defined in the axial direction. For this purpose, contact sections are also conceivable which deviate from the rectangular shape of conventional labels, but in principle any label shape and size corresponding to the surface area of the rubber roller is conceivable. However, a contact section is to be understood as meaning that it delimits the relevant area of the surface, the maximum extent of which in the axial direction is, as mentioned above, smaller than the height of the cover surface of the rubber roller. For this purpose, the contact section does not necessarily have the area of the label to be glued. Gluing of the starting and ending regions of the labels is effected, for example, by means of two contact sections, which are spaced apart from one another in the circumferential direction of the glue roller, and whose dimensions are significantly smaller than the labels. Furthermore, the glue roller can have two or more contact sections arranged axially apart from one another, which can be used, for example, for gluing bottle labels and neck labels as well as for simultaneous gluing. The number and shape of the contact sections are limited only by the surface extent of the rubber roller and the abovementioned conditions, in particular by a limited extent in the axial direction of the rubber roller. It is important that one or more contact sections axially delimit partial subregions of the glue roller in which glue is to be applied in a targeted and only manner. In this way, on the one hand it can be ensured that glue is only applied where glue is required depending on the label size, label shape and/or glued area, which leads to a reduction in glue consumption. On the other hand, it is possible to prevent unnecessary contact of the applied glue with ambient air, which would lead to changes in the chemical properties of the glue. Furthermore, no excess glue is applied to the rollers, which would run off the rollers if not transferred to the label. This makes it possible to omit the otherwise usual collection of the glue running down on the glue roller and its return to recycling.

According to a special refinement, at least one contact section can be designed such that it extends only over a part of the circumference of the cover of the rubber roller. Thus, in addition to delimiting the contact section in the axial direction, the contact section is also delimited in the circumferential direction. In particular, the length of the contact section in the circumferential direction can be selected to be adapted to the label to be glued. It is also conceivable to provide a plurality of identically shaped or differently shaped contact sections, which are disconnected from one another in the circumferential direction, along the circumference of the cover, in order, for example, to enable gluing of the beginning and end of the label.

In a further refinement, the surface of the rubber roller has a smooth surface at least on parts of the surface outside the contact section. For example, the surface of the rubber roller between the contact sections can be made smooth. In particular, the entire surface of the rubber roller outside the at least one contact section in the covering region can be designed smooth and have a covering radius. In this way, during operation, glue can only be applied to the partial area delimited by the contact section, while the remaining area remains essentially free of glue. For example, glue applied on smooth areas of construction is removed by elements of the gluing unit which are in contact with the surface of the glue roller (as described in detail below), so as not to remain on areas of smooth construction.

According to a further development, one or more depressions can be formed as depressions etched or milled into the surface, the gaps of the structure of the surface in the form of a grid, a perforated plate or a fabric or a combination thereof. Thus, the surface of the rubber roller in the region of the contact section can have a structure consisting of a plurality of alternating depressions and elevations. For this purpose, the upper edge of the elevation lies on the cover surface, while the depression, as described, lies between 0.02 and 0.08 mm, preferably between 0.03 and 0.05 mm, below the cover surface. For this purpose, the depressions and elevations can in principle form any desired pattern, which can be produced, for example, by means of laser etching and/or milling. In particular contact sections in the form of grids, perforated plates or fabrics are conceivable. The size of the depressions as well as the width of the elevations, for example the mesh width of the grid or fabric and the hole size of the perforated plate determine the amount of glue accommodated here. Depending on the type of glue and the type of label, the ideal surface structure can thus be defined in order to ensure reliable gluing of the labels.

According to a further development, the rubber roller can comprise a base roller, which is designed such that at least one surface element of the rubber roller is fastened exchangeably on the base roller, wherein the at least one surface element is in particular configured to have at least one contact segment. For example the base roll may have a cylindrical shape with a smaller radius around the thickness of the surface element than the radius of the cover. The base roller can be driven as usual by means of an open-loop and/or closed-loop controllable drive. The surface element can be designed, for example, as a hollow cylinder which is placed over the base roller and fastened thereto. In this case at least one contact section is defined on or in the surface element. For example, the hollow cylinder in the region of the contact section can be configured as a grid, a perforated plate or a fabric as described above. In this case the surface elements removed from the base roller can be cleaned of adhesive residues particularly easily. Alternatively, the depression can also be formed in the outer surface of the surface section, but not through it.

The contact section can also be realized when the surface element does not fit over the entire circumference of the base roller, but only over a partial area of the base roller, for example, when it is fixed as an insert in a recess provided here of the base roller. Two configurations. In this case, in particular two or more surface elements can be provided, which are fastened in different regions of the base roller. The individual surface elements can each have one or more contact sections and can be removed independently of one another and exchanged for other surface elements. On the one hand, this simplifies the cleaning of the surface elements, and on the other hand, it greatly increases the application range of the rubber roller. The product can thus be changed to another label form by simply exchanging one or more surface elements.

Depending on the configuration, one or more surface elements can be attached to the base roller by different means. For example, a clamping connection by means of clamping rings or tensioning rings can be used in order to fix the surface element on the base roller. Alternatively or additionally, the base roller can be provided with dovetail-shaped recesses into which corresponding mating elements of the surface elements can be inserted. Various alternative fastening means are conceivable here. It is only important for this that the cot consisting of base roller and surface elements fulfills the abovementioned requirements.

With the rubber roller configured according to this refinement, it is not necessary to completely replace the rubber roller when changing products. The rubber rollers can thus be retrofitted in a simple manner for labels of different sizes and shapes. It is also possible to vary the amount of glue to be transferred by exchanging surface elements, for example by using fabric or mesh inserts with a larger or smaller mesh pitch and/or mesh density. As in the above glue rollers, in the surface element, the area of the surface element outside the contact section can also be made smooth in order to be able to deliver glue in a targeted and only way to the contact section.

As mentioned above, alternatively or additionally, the gluing unit can also be configured to apply the glue in the at least one receiving space only in one or more subregions of the surface of the glue roller. For this purpose, the gluing unit can in particular have two or more receiving spaces which are spatially separated in the axial direction of the glue roller. A spatial separation in the axial direction of the rubber rollers is understood here to mean that between adjacent receiving spaces there is an area of the rubber roller not provided with glue, wherein the extent of this area in the axial direction protrudes beyond the extent of the receiving spaces. The design-dependent thickness of the delimiting element on the axial side. In other words, the gluing unit comprises two or more subunits with separate accommodation spaces, wherein the subunits themselves are spatially disconnected from each other in the axial direction of the glue roller. This clearly differs from the subregions of the receiving space of the gluing unit described below which are separated from one another by the separating element. In particular according to this development, the two or more spatially separated receiving spaces are each connected to a respective delivery line for the glue to be applied and can thus be filled with glue and operated independently of one another. For example, the gluing unit can have separate accommodation spaces for body labels and neck labels, so that the application of neck labels can be flexibly connected or alternated between body labels and neck labels.

The spatially separated receiving spaces can be arranged along the axial direction of the rubber roller such that the aforementioned subregions of the axial extent of the rubber roller can be delimited by their glued axial subregions. For this purpose, the subregion that can be glued can correspond in particular to the aforementioned contact section of the rubber roller. However, the subregion that can be glued can also be larger than the contact section of the rubber roller, wherein the surface of the rubber roller outside the contact section is designed smooth as described. In this way, labels of other sizes and/or shapes can be converted in a simple manner by exchanging the rubber rollers or the aforementioned surface elements.

The delivery of glue to the spatially separated receiving spaces can be controlled open-loop and/or closed-loop by means of an in particular programmable memory open-loop control and/or closed-loop control unit of the labeling device. For this purpose, the labeling device can have one or more adjustable glue pumps and/or regulating valves in the delivery line for the glue. The open-loop control and/or closed-loop control unit can open-loop control and/or closed-loop control the amount of glue delivered according to at least one adjustment parameter from the group consisting of the following parameters: type of label to be glued, per time The number of labels that need to be glued per unit, the type of glue used, the temperature of the glue used, the ambient temperature of the rubber roller, and the area of the label to be glued. Programmable memory open-loop control and/or closed-loop control units are known in the prior art, so they will not be described in detail here. It should be understood that known elements, such as a computer unit, a display unit such as a monitor or a touch screen, an input unit such as a keyboard or a touch screen, a storage unit, especially a storage unit for storing one or more of the above-mentioned parameters for classification management, etc. may be Said programmable memory is part of the open-loop control and/or closed-loop control unit.

Wherein several parameters, such as the type of label to be glued, the type of glue used or the area of the label to be glued can be set in a manner of classification management, which is obtained by reading parameters from the above-mentioned storage unit when changing products, for example to fulfill. Further adjustment parameters, such as the number of labels to be glued per time unit, the temperature of the glue used or the ambient temperature of the glue rollers, can be determined by means of corresponding sensors, e.g. optical sensors or temperature sensors for measuring the container throughput and used for adjusting the glue pump and/or regulating valve. For example, an open-loop control and/or a closed-loop control unit can adjust the glue pump according to the measured container throughput, so that the exact amount of glue is taken from the storage container and delivered to the storage space, which needs to be given to the corresponding number of labels and glue rollers. Apply glue to the corresponding part of the area. Further control parameters, such as the viscosity of the glue or the surface properties of the containers to be labeled, can be taken into account in the open-loop control and/or in the closed-loop control of the glue delivery. The type of label to be glued may include the size and style of the label in addition to the label material. The label can be designed, for example, as a ring label or as a front/rear label. Likewise, bottles to be labeled can be supplied with body and neck labels. Types of gums may be provided as described above eg by casein gums, dextrin gums or dispersion gums. The ambient temperature of the roller has an effect on the adhesive properties of the glue on the label and on the amount of glue that is removed from the roller by the label or tray.

According to a development, the gluing unit can have at least one controllable slide on the glue roller side, by means of which at least one receiving space can be closed off on the glue roller side, in particular gas-tight. For this purpose, the controllable slide can be constructed and arranged in such a way that it pushes the gluing unit by means of a controllable transmission, for example a pneumatic cylinder or a servomotor, in front of the opening of the receiving space on one side of the rubber roller, to close the opening airtight. During operation, the slide opens automatically, so that the glue in the receiving space can come into contact with the surface of the rubber roller again and the rubber roller is immediately ready for operation again. In order to be able to close the receiving space in a gas-tight manner, one of the below-described circumferential wall elements of the gluing unit can have a slot or the like into which the sliding element can slide. The glue chamber can thus be closed off by means of a slide during prolonged interruptions in labeling work or overnight, i.e. the receiving space is closed by means of a slide, thereby protecting the glue contained therein from drying out and being altered by contact with ambient air its chemical properties. The gluing unit can be detached from the rubber roller in the stationary and cleaning modes as described below, so that the rubber roller can be cleaned, for example, with an adjustable rotating brush and water or another cleaning liquid. Since the glue can thus remain in the hermetically closed receiving space of the gluing unit, it is possible to omit the glue scraper, that is to say the recovery pipe which is customary in other cases of gluing units.

According to a special refinement, the slide can have two or more individually controllable sections, which are assigned to different axial regions of the rubber roller of the receiving space. Since the receiving space is oriented in the axial direction of the rubber roller, the sections which can be controlled independently of one another delimit subregions separated from one another in the axial direction of the rubber roller. If a section of such a slide is opened, glue is applied to the corresponding partial area. In this way, the subregions to be glued can be flexibly selected by individually actuating the sections of the slide. For this purpose, the receiving space only has to be filled with glue up to the axially uppermost open region of the receiving space including the reference rubber roller. Ideally, during operation, the receiving space is completely filled with glue by means of the segmented slide, whereby only the opening and closing of the sections to which the glue is applied is determined in the axial subregion. For the individual actuation of the segments, the gluing unit can have corresponding mechanisms, for example a corresponding number of pneumatic cylinders or servo motors. Through the described development, a flexible gluing device for different axial subregions of the rubber roller can thus be realized with one receiving space. For example, analogously to the previously described development with spatially separated receiving spaces, the slide can comprise two or more sections, which are assigned to the respective subregions on the surface of the rubber roller. For example one section could be used for the bottle label and one section for the neck label. For this purpose, adjacent segments can be separated from one another by stationary webs (Stegs), which permanently close the receiving space in the corresponding axial partial area, so that the corresponding partial area of the surface of the rubber roller is not disturbed. Apply glue.

According to a particular configuration, different regions of the receiving space can be separated from one another by one or more separating elements. For this purpose, such divided subregions of the receiving space can be filled with glue via separate branches of the delivery pipe for glue. Regulating valves in the branches allow independent filling of the individual subareas. Furthermore, the separating element can be designed with a thickness corresponding to the axial extent of the corresponding subregion of the surface of the rubber roller which does not need to be glued. By filling the corresponding subregions in a controlled manner, glue can be applied individually to desired subregions of the surface of the rubber roller without segmenting the slide. It is understood that the embodiment described here with a specially designed slide can also be used in the embodiment described above with a plurality of spatially separated receiving spaces.

According to a development, the gluing unit can have at least one first wall element and a second wall element, wherein the first and second wall elements delimit the receiving space on both sides in the circumferential direction of the glue roller. For this purpose, the wall element can extend substantially in the axial direction of the rubber roller, in particular parallel to the axis of the rubber roller. According to this development, the second wall element is arranged behind the first wall element in the direction of movement of the rubber roller, so that the opening of the receiving space between the two wall elements, which can optionally be closed by the above-mentioned slide, faces the glue. Roller for glue output. In particular, the first and/or the second wall elements can be designed such that they come into mechanical contact with the cover of the rubber roller, ie in particular the smooth part of the surface of the rubber roller, and thus contact the rubber roller during operation of the labeling machine. For example, the first and/or the second wall element can be pressed resiliently against the surface of the rubber roller by means of a spring mechanism. For this purpose, the wall element contacting the glue roller acts as a squeegee during operation, wherein the wall element arranged at the front removes glue residues and dirt, such as label residues, while the wall element arranged behind prevents the application of glue on the On the smooth area of the surface of the rubber roller.

According to another development, the first wall element can extend in a direction which encloses an angle with a tangent to the circumference of the rubber roller, which angle is between 0° and 70°, preferably between 10° and Between 60°, particularly preferably between 10° and 30°. For this purpose, the wall element bears against the rubber roller at a very flat angle, in particular in the contact region, so that even under the action of spring force, frictional losses, especially of the sensitive contact section, are minimized. Thus, the first and/or the second wall element can be an elastic wall element, for example made of an elastic material and pressed against a rubber roller. Plus, the angled design makes it easy to scrape off glue or apply glue to a roller. It should be understood that the gluing unit can have the above-mentioned wall elements for each accommodating space, which define the accommodating space in the circumferential direction of the glue roller.

According to a development, the gluing unit can also comprise at least one sealing device which seals the receiving space on at least one side in the axial direction of the glue roller, in particular on the side in the direction of gravity. Due to this sealing arrangement, it is prevented that the glue in the receiving space escapes uncontrollably from the gluing unit. Preferably, the gluing unit can comprise two sealing devices, which seal the receiving space on both sides in the axial direction. Thus, the sealing means together with the wall elements, the rear wall of the receiving space and optionally the aforementioned slide form a closable cavity which has an opening on the rubber roller side for applying the glue in the cavity to the rubber roller on the surface. It should be understood that the gluing unit can have this arrangement for each of the above-mentioned spatially separated receiving spaces. Furthermore, an opening for the connection of the transport tube can be provided in the rear wall of the receiving space, through which opening the receiving space is filled with glue. In order to reliably seal the receiving space, the rubber roller can have a sealing region of the surface of the rubber roller corresponding to the sealing device, in particular designed to be smooth, which is in contact with the sealing device. The sealing effect between the rubber roller and the sealing device can be improved by creating a smooth surface in the sealing area. The seal slides on this smooth surface while the rubber roller is running. For this purpose, the seal can be made of a suitable low-friction material, for example stainless steel.

In a further refinement, the gluing unit does not have a dispensing device for dispensing glue from the receiving space. For example, only vent openings with valves can be provided in the rear or side walls of the receiving space. For this purpose, the vent hole is preferably arranged above the opening of the delivery pipe for feeding the glue, so that the glue in the interior of the receiving space can always be under a substantially constant pressure and distributed evenly.

The gluing unit and/or the transport line for the glue can be heated and/or cooled by means of an adjustable heating and/or cooling device. The heating device can be configured, for example, as a heating coil. Heating and cooling devices are sufficiently known in the prior art and will therefore not be described in detail.

According to a development, the gluing unit is mounted pivotably on the carrier. For this purpose, actuators can be provided, for example pneumatic cylinders, by means of which the carrier and the gluing unit are adjusted to and separated from the rubber roller. If, for example, there are no more containers to be labeled in the inlet of the labeling device, the gluing unit can be separated from the glue roller and the labeling device can be emptied. The rubber roller is then stopped eg for cleaning or refitting for other labels.

In addition, the rubber roller and/or the gluing unit may be configured to be movable in the axial direction of the rubber roller. For this purpose, linear motors can be used, for example with a spindle drive, which move the rubber roller and/or the bearing of the gluing unit in the axial direction of the rubber roller. By making the glue roller and/or the gluing unit movable, it is possible to adapt the partial area of the surface of the glue roller to be glued to the position of the label to be glued on the container.

The rubber rollers can be driven via direct drives, for example by means of servo motors. For this purpose, the rubber roller can be designed particularly simply, for example as a hollow cylinder, which can be coupled to the drive, for example via the bevel gear of the crankshaft, and can thus be easily replaced. The drive of the rubber roller can be designed such that preferably one revolution of the rubber roller corresponds to a label segment or tray segment on the vacuum cylinder. For this purpose, the circumference of the rubber roller is greater than the maximum unfolded length of the pallet or the maximum length of the label to be applied. Furthermore, the glue roller can also be designed to be adjustable in the circumferential direction, so that glue can be applied precisely to the desired contour of the label.

The development described above is designed such that the glue is applied to the surface of the glue roller only in the region where the glue is taken up by the label to be glued. This on the one hand reduces the total amount of glue consumed and on the other hand prevents the glue on the glue roller from drying out. Furthermore, glue recovery, which is common in other cases, can be omitted. The glue rollers used can be designed in such a way that they can be easily and quickly adapted to another label type as required. Furthermore, the gluing unit used is designed to respond flexibly to product changes. Furthermore, different operating states of the resulting labeling device, such as labeling mode, standstill mode, cleaning mode, etc., can be set particularly easily and advantageously.

Description of drawings

Further features and exemplary embodiments and advantages of the invention are explained in detail below with reference to the drawings. It should be understood that these embodiments do not limit the invention. It should also be understood that some or all of the features described below can also be combined with each other in other ways.

Figure 1a shows a schematic top view of a labeling device in which the glue is applied directly to the label by means of a glue roller.

Figure 1b shows a detail view of the gluing machine in Figure 1a.

Figure 2a shows a schematic top view of a labeling device in which glue is applied to labels by means of a pallet rotating disc.

Figure 2b shows a detail view of the gluing machine in Figure 2a.

Fig. 3 schematically shows an exemplary embodiment of a rubber roller and a gluing unit according to the present invention.

FIG. 4 shows a gluing unit according to the invention with two spatially separated receiving spaces.

FIG. 5 shows a gluing unit according to the invention with a segmented slide.

Figure 6 shows a rubber roller with replaceable surface elements according to the invention.

Detailed ways

In the following, identical or identical type elements are identified with the same reference numerals. The description of these elements is not repeated for clarity. Furthermore, it should be understood that some or all elements in the following embodiments may be replaced by or combined with elements of the same type described in connection with other embodiments.

Figure 1a shows a schematic top view of a labeling device in which glue is applied directly from a glue roller to the label. A detailed view of the gluing machine of Fig. 1a is shown in Fig. 1b. The shown labeling device has the following elements known from the prior art: an input device 151 for continuously conveying the containers to be labeled; an inlet star wheel 154 with an upstream dispensing screw 153; a guide arc 156 ; a rotating disk 157 with a plurality of rotating disks 158 arranged at equal distances on a common partial circle; an outlet star wheel 155 and an outlet star line 152 for outputting the labeled containers. In the surrounding area between the inlet starwheel 154 and the outlet starwheel 155 , a labeling device 161 for applying labels to the containers is located on the periphery of the rotating disk 157 . The labeling device 161 illustrated here by way of example has two label roll receptacles 159 and a joining station 160 located between them, a cutting device 163 and a gluing machine 110 with a glued-on pre-cut The label is passed to the vacuum cylinder 102 on the passing container.

The labeling process of the containers takes place in particular as follows: The containers, which are usually conveyed vibratingly via the input device 151, are moved apart from one another by the laterally arranged distributing worm 153 towards the pitch of the inlet star wheel 154, so that the inlet star wheel can be moved with the opposite The guide arcs 156 cooperate to transport the contained containers onto the rotating discs of the rotating carousel 157 . In this case, the containers are clamped by a not shown centering hood and passed tangentially by the vacuum cylinder 102 of the labeling device 110 by the circular movement of the rotary disk 157 . At the same time, the label strip is pulled out in a controlled manner by the label strip shaft 159 and cut into individual labels in the cutting device 163 . The separated labels, which lie on the rotating vacuum roller 164 with the printed image facing outwards during the cutting process, are passed to the vacuum cylinder 102 after the cutting process, from where the labels pass the rubber roller 101 with the back side facing outwards and after the determined and type of label Apply glue in the relevant areas. The glued labels are fed tangentially to the carousel 157 where the containers are located. For this purpose, the label to be affixed comes into contact with the container with the glued portion and spreads over the container by a suitable movement of the container. After passing the labeling apparatus 110 and after applying the labels to the containers, the outlet star wheel 155 transfers the labeled containers to the output device 152 .

In the detail view of FIG. 1 b , in addition to the gluing machine 110 , details of the cutting device 163 can also be seen. The label tape drawn from the label tape shaft 159 is conveyed by the deflection roller 165 and the counter shaft 166 of the cutting device 163 . Here, the label strip rests against a vacuum roller 164 , which rotates in the direction of arrow 167 and is cut by separating elements 168 according to cutting marks or printed patterns. The cut label is passed to the vacuum cylinder 102 which rotates in the direction of arrow 169 . The label thus bears against the cover surface 122 of the vacuum cylinder 102 , which rotates about the axis 120 . The cover 122 of the vacuum cylinder 102 has elements (not shown) that accommodate the start or end of the label, respectively. The vacuum cylinder is replaceable to accommodate different label lengths.

When the label moves past the rubber roller 101, each area or the entire back of the label is in contact with the rubber roller, so that the label is coated with glue at a certain position. The amount of glue to be delivered depends here on the label type and the area to be glued. In order to be able to apply glue to the labels, a gluer 110 is required. A gluing machine 110 according to the invention shown in FIG. 1 b has a glue roller 101 and a gluing unit 172 . Via a device 170 that can be heated by means of an optional glue heating device 171, this device is used to remove glue from a storage container for storing glue, such as an adjustable glue pump, and conveys the glue that is taken out via a transport pipe 173 to the shown here. The gluing unit 172 shown schematically is transferred by means of the gluing unit to the surface 112 of the glue roller 101 rotating around the glue roller axis 111 . In this case, the gluing unit 172 , as shown in detail below, is designed as a chamber squeegee with at least one receiving space for the glue, which can be located so close to the glue roller 101 that the glue passes through the opening of the receiving space. Applied to the surface 112 of the rotating rubber roller 101.

Figure 2a shows a schematic top view of an alternative labeling device in which glue is applied to the labels by means of a pallet rotating disc. A detail view of the gluing machine of Fig. 2a is shown in Fig. 2b. A plurality of removal elements 205 (so-called trays) are arranged rotatably on a rotatable carrier 204 of the carousel. When the tray carousel rotates, the receiving surface of each extraction element 205 rolls over the glued surface of the rubber roller 201, and the label 207 is taken out from the label container 209 by adhesive force, wherein the label is glued on the back side, and The label is passed to the gripper cylinder 203 which transfers the label to the container. The containers have previously been conveyed in the inlet stream 251 to the distribution worm 253 , which produces the required distribution to the inlet spider 254 . Furthermore, sensors for determining the throughput of containers to be labeled can be arranged along the inflow 151 . The containers to be labeled are transferred via the inlet star wheel 254 to the rotating disk 258 of the rotating disk 257 which guides the containers past the gripper cylinder 203 . Here too, the label to be applied, which is conveyed by the gripper cylinder 203 , rolls onto the surface of the container by suitably rotating the container received by the rotary disc 258 . The label affixed to the container can then be pressed against the container by means of the brush 226 . Finally, the labeled containers are passed via outlet star wheel 255 to the output stream where optical sensor 227 can provide quality control of the labeled containers.

Further details of the labeling device are shown in Figure 2b. For example, the labeling containers 209 are adjusted to the pallet carousel 204 via the pneumatic cylinder 240 in the labeling mode and are disconnected therefrom in the stationary mode. The trays 205 of the tray rotating disk 204 can be pivoted by means of a control eccentric (not shown), so that the trays are glued by the glue roller 201 and then receive labels 207 from label containers 209 respectively. The glue roller 201 can be supported on a support 225 which can be pivoted by means of a pneumatic cylinder 224, whereby the glue roller can be adjusted to the tray carousel 204 in the labeling mode and can be separated from it in the stationary mode. The glue removed from a storage container (not shown) by means of a removal device 270 , for example a glue pump, is conveyed via a delivery line 273 to a gluing unit 272 shown schematically here, for example in the form of a chamber glue scraper. , the gluing unit transfers the glue to the surface of the rubber roller 201 . The labels 207 taken out of the label container 209 via the tray 205 are transferred to the gripper cylinder 203 . The clamping cylinder removes the corresponding label 207 from the tray 205 by means of the clamping fingers 214 and the fixed stopper 215 , wherein the glued side of the label 207 rests on the clamping sponge 213 . For this purpose, the rolling of clamping roller 218 fastened to clamping rod 217 on control eccentric 216 of clamping cylinder 203 brings about a movement of clamping finger 214 supported on clamping rod 217 . To transfer the label 207 to the container, the fingers 217 are reopened.

FIG. 3 schematically shows an exemplary embodiment of a rubber roller according to the invention and a gluing unit in the form of a cavity squeegee. In the figures, for reasons of space, a plurality of optional elements are shown in conjunction with one another, but as mentioned above they can also be arranged independently of one another and individually. The development shown includes a rubber roller 301 , the cross-section of which is a strictly cylindrical cover is shown in the left part of the drawing. The maximum overall extent of this covering in the direction of the axis of rotation L around which the rubber roller 301 is rotated by means of the drive 330 is indicated by H in the drawing. The height H corresponds at the same time to the axial extent of the surface of the rubber roller which can be applied to the greatest extent. In this embodiment, drive 330 is designed as an adjustable servomotor, which is regulated by means of an open-loop control and/or closed-loop control unit 331 .

According to the invention, the rubber roller 301 is assigned a gluing unit 372 on its circumference, wherein the gluing unit 372 is shown in operation. In this non-restrictive refinement, the accommodation space of the gluing unit is divided into two axially successive regions 374 a and 374 b by means of the provision of a separating element 392 , which can be controlled independently of each other via separate transport pipes 373 a and 373 b . The regulating valves 379a and 379b are supplied with glue independently of each other. It should be understood that the gluing element 372 can also have only one receiving space and one delivery tube as described above. The subregions of the receiving space shown here cover consecutive subregions with heights H1 and H2 of the axial extent of the surface of the rubber roller. According to the invention, the total extent H1+H2 of the partial area of the surface of the rubber roller 301 that can be glued by the gluing unit 372 is smaller than the total extent H of the surface of the rubber roller viewed in the axial direction of the rubber roller.

The gluing unit shown in this embodiment can also be pivotally supported at the carrier 342, so that the entire gluing unit rests on the surface of the glue roller 301 during operation and can be separated from it in stationary mode or cleaning mode . Also shown in the left part of the drawing are seals 375 a and 375 b , which axially seal the receiving space of the gluing unit upwards and downwards, so that no glue can escape uncontrollably. Preferably, the sealing means slides on a smooth part of the surface of the rubber roller. Furthermore, the figures show optional ventilation holes 377 in the upper wall element of the gluing unit, which allow a constant glue pressure in the interior of the receiving space. Finally, the first wall element 376 a is shown in the left part of the figure, which delimits the receiving space in front of the rubber roller 301 in the circumferential direction relative to the direction of movement of the rubber roller.

The arrangement of the first wall element 376 a and the second wall element 376 b is more precisely shown in the right part of the drawing with the aid of the glue roller 301 and the horizontal cross-section of the gluing unit 372 . As the rubber roller 301 rotates in the direction of the arrow P, the surface elements of the surface 301b of the rubber roller 301 first hit the first wall element 376a and then the second wall element 376b. In the development shown here, both the first and the second wall element contact the surface of the rubber roller, wherein the wall element can be pressed against the surface by means of a spring element (not shown). Between the axially extending wall elements 376 a and 376 b there is an opening O of the receiving space 374 , which likewise extends in the axial direction. Glue comes out of the receiving space 374 through the opening and is applied to the surface 301b of the glue roller 301 .

Furthermore, according to the invention, the illustrated cross-section shows a contact section 380 . The contact section 380 is defined in the circumferential direction of the rubber roller as seen in the figure. Likewise, according to the invention, the contact section is defined in the axial direction of the rubber roller on the partial area of the surface of the rubber roller to be glued. In an embodiment not shown here, the surface of the rubber roller in the region of the contact section 380 has a structure 301b consisting of depressions and elevations, which is suitable for receiving the desired amount of glue of the gluing unit 372 in the depressions. Ministry. Outside the contact section 380 , the surface 301 a of the glue roller 301 is designed smooth, so that the wall element 376 b abutting against the surface prevents glue from being applied to this part of the glue roller. In the embodiment shown, the contact section 380 is designed as part of an exchangeable surface element 385 described below, which is designed as a hollow cylinder. However, the contact section can also be formed as part of the rubber roller itself.

In order to prevent excessive frictional losses between the rubber roller 301 and the wall elements, the two wall elements 376a and 376b are arranged circumferentially on the cover surface of the rubber roller with respect to the tangent T at a plane angle α. Furthermore, the axial extent of the wall element can be chosen to be greater than the axial extent of the contact section 380 in order to avoid hooking of the wall element in the structure of the contact section. The angle α can be, as described above, between 0° and 70°, preferably between 10° and 60°, particularly preferably between 10° and 30°.

FIG. 4 shows an alternative embodiment of the rubber roller and the gluing unit according to the invention. In this development, the gluing unit 472 comprises two subunits 472a and 472b spaced apart from each other in the form of cavity gluers for neck labels or bottle labels, which subunits respectively have The respective receiving spaces 474a slide 474b. Therefore, the two accommodation spaces are spatially separated from each other in the axial direction of the rubber roller 401 and define spatially separated, glueable partial regions 480a and 480b, which have the axial extent H1 of the surface of the rubber roller and H2. An area 480c to which no glue has been applied is located between the partial areas 480a and 480b. As mentioned above, the glue roller 401 can also be caused to rotate about its axis of rotation L here by means of the adjustable drive 430 . The subunits 472a and 472b of the gluing unit have separate delivery pipes 473a and 473b for the glue, so that the subunits can be operated independently of each other. The gluing device thus shown can be used, for example, for applying bottle labels when the subunit 472b is activated. Alternatively or additionally, the glue applicator can be used to apply the neck label when the subunit 472a is also activated. For this purpose, adjustable valves in the delivery lines 473a and 473b enable the delivery of glue according to the label to be glued. Therefore, if excess glue on the glue roller runs off, the glue can be collected in the glue bowl 441 . However, since the supply of glue to the receptacles 474 a and 474 b can be controlled in such a way that only the required glue is always replenished, a recovery line for the cavity can be definitely omitted.

Another embodiment of the gluing unit according to the invention is shown in FIG. 5 . In this refinement, the gluing unit 572 has only one receiving space 574 with a delivery line 573 for the glue. The upper part of the drawing shows a vertical cross section of the gluing device, the lower part of the drawing shows the corresponding horizontal cross section. In addition to the glue roller 501 and the gluing unit 572 , the figure also shows an exemplary pallet 505 , which is rotatably mounted on a pallet carousel. For this purpose, the curved adhesive surface of the tray 505 has a shape corresponding to the shape of the structured contact section 580 of the glue roller 501 , so that the glue applied to the contact section 580 can be taken up almost entirely by the tray 505 . In this development, the rubber roller 501 is also driven by the adjustable drive 430 . Furthermore, the rubber roller 501 is pivotably supported here on a carrier 525 , which can be adjusted, for example, by means of pneumatic cylinders (not shown) on the tray carousel. For this, the gluing unit 572 may be configured to pivot together with the glue roller.

As in the preceding refinement, the gluing unit 572 here also includes seals 575 a and 575 b , which seal the gluing chamber 574 upwards and downwards. Furthermore, in this refinement a ventilation opening 577 is shown which is provided with a regulating valve for venting the cavity. Furthermore, in this refinement, the gluing unit 572 has a segmented slide 590 which can be pushed by means of a gear 591 in front of the opening of the cavity 574 so that the cavity is airtight on the glue roller side. seal. As a result, the glue located in the receiving space 574 can be protected from drying out during longer interruptions in the labeling operation. To continue the labeling operation, the slide 590 is pulled back again, so that the opening of the chamber wiper 572 is released again.

As noted above, in the illustrated embodiment, the slide 590 is configured in segments. In particular, the slide 590 comprises two sections 590a and 590b which can be controlled independently of one another by means of transmissions 591a and 591b, between which there is a stationary section 590c (see right side of the partial drawing above). The slide 590 is formed with a stationary section 590c in the region of the seals 575a and 575b. By individually controlling sections 590 a and 590 b , different subregions of glue roller 501 can be glued independently of one another. In the configuration shown in which the rubber roller 501 has a contact section 580 for the bottle label, for example the upper section 590a of the slide 590 remains closed while the lower section 590b opens. In this configuration, glue is therefore applied to the rubber roller only in the region of the contact section 580 , even when the receiving space 574 is completely filled. In this case, the amount of glue conveyed via the conveying tube 573 can be correspondingly reduced compared to applying glue to both the body label and the neck label at the same time.

Finally, FIG. 6 shows a rubber roller with replaceable surface elements according to the invention. In the embodiment shown, the rubber roller 601 driven again by the adjustable drive 330 comprises a base roller 687 on which a surface element 685 in the form of a hollow cylinder can be completely fitted. The gluing device can thus be retrofitted in a simple manner for other labels by removing the cover 686 and the drive device 330 . For this purpose, the contact section 680 is formed on or in the cylindrical surface element 685 . In particular, the contact section 680 can be designed in the form of a grid, a perforated plate or a fabric, the openings of which pass through the surface element for easier cleaning. Alternatively, the contact section 680 can be formed as described in the surface of the surface element 680 . As mentioned, instead of all surface elements it is also possible to use one or more surface elements which can be inserted or suspended in recesses in the surface of the base roller 687 . In this way, a flexible configuration of the rubber roller 601 for a plurality of different label formats and sizes is possible.

This embodiment allows the glue to be applied in a targeted manner only in partial regions of the surface of the glue roller, where the glue is removed by the labels or trays to be glued. In this way, on the one hand, the amount of glue used is reduced and, on the other hand, the maintenance costs of the gluing device are reduced. In particular, complex recycling for excess glue can be omitted. Furthermore, this embodiment of the glue roller and the gluing unit allows a quick product change and a simple change between the operating mode and the stationary mode of the labeling device.

Claims (18)

1. A labeling device for labeling a label on a container, said labeling device comprising a gluing device, said gluing device having rubber rollers (101, 201, 301, 401, 501, 601) and being The gluing unit (172, 272, 372, 472, 572) distributed by the rubber roller, the gluing unit is used to apply glue to the rubber roller (101, 201, 301, 401, 501, 601) , wherein, the gluing unit (172, 272, 372, 472, 572) has at least one accommodating space (374a, 374b, 474a, 474b, 574) for accommodating glue, Wherein, the rubber roller (101, 201, 301, 401, 501, 601) and/or the gluing unit (172, 272, 372, 472, 572) are constructed in this way and the rubber roller and the gluing unit The units are arranged relative to each other so that the glue located in the accommodating spaces (374a, 374b, 474a, 474b, 574) is only on one or more of the entire range of the surface of the rubber roller viewed along the axial direction of the rubber roller applied to the surface of the rubber roller in some areas; It is characterized in that, The gluing unit (572) has at least one controllable slide (590) on the rubber roller side, by means of which the at least one receiving space (574) can be closed off on the rubber roller side. 2. The labeling device according to claim 1, wherein the rubber roller (101, 201, 301, 401, 501, 601) has at least one contact corresponding to the one or more partial areas in the axial direction Sections (380, 480a, 480b, 580, 680) configured such that the contact section, when in contact with the gluing unit (172, 272, 372, 472, 572), holds the glue in a position relative to The cover surface of the rubber roller is radially retracted into one or more recesses. 3. The labeling device according to claim 2, wherein said at least one contact section (380, 480a, 480b, 580, 680) is only between said rubber rollers (101, 201, 301, 401, 501, 601) extends over a portion of the circumference of the cover. 4. The labeling device according to claim 2 or 3, wherein the at least one contact section (380, 480a, 480b, 580, 680) the surface (301a) is constructed smooth. 5. The labeling device according to claim 2 or 3, wherein the one or more recesses are configured as recesses carved or milled into the surface, configured as a grid, Gaps in structures in the form of perforated panels or fabrics or combinations thereof. 6. The labeling device according to claim 2 or 3, wherein the rubber roller (601) comprises a foundation roller (687), and the foundation roller is configured such that at least one surface of the rubber roller (601) Elements (685) are fastened replaceably at said base roller (687). 7. The labeling device according to any one of claims 1 to 3, wherein the gluing unit (472) has two or more spaces in the axial direction of the rubber roller (401) Upper separate housing spaces (474a, 474b). 8. The labeling device according to claim 1, wherein the slide (590) has two or more individually controllable sections (590a, 590b) which are assigned to the receiving space ( 374a, 374b) in different areas in the axial direction of the rubber roller (301, 501). 9. The labeling device according to claim 8, wherein different regions of the receiving spaces (374a, 374b) are separated from one another by one or more separating elements (392). 10. The labeling device according to any one of claims 1 to 3, wherein the gluing unit has at least one first wall element (376a, 576a) and a second wall element (376b, 576b), wherein , the first wall element and the second wall element define the accommodation space (374a, 374b, 574) on both sides along the circumferential direction of the rubber roller (301, 501). 11. The labeling device according to claim 10, wherein the first wall element (376a, 576a) and/or the second wall element (376b, 576b) contacts the rubber roller (301, 501 ). 12. The labeling device according to any one of claims 1 to 3, wherein the labeling device further comprises at least one sealing device (375a, 375b, 575a, 575b), which is positioned along the rubber roller ( 301, 501) on at least one axial side of the housing space (374a, 374b, 574). 13. The labeling device according to any one of claims 1 to 3, wherein the gluing unit (372) is pivotably supported on a carrier (342). 14. The labeling device according to any one of claims 1 to 3, wherein the rubber roller (101, 201, 301, 401, 501, 601) and/or the gluing unit (172, 272 , 372, 472, 572) are configured to be able to move in the axial direction of the rubber roller. 15. The labeling device according to any one of claims 1 to 3, wherein the at least one accommodating space (574) can be hermetically closed on the rubber roller side by means of at least one sliding member (590) . 16. The labeling device as claimed in claim 6, wherein the at least one surface element (685) is designed such that it has at least one contact section (680). 17. The labeling device according to claim 11, wherein the first wall element (376a, 576a) and/or the second wall element (376b, 576b) is elastically pressed to the rubber roller (301, 501) at the surface. 18. The labeling device according to claim 12, wherein the at least one sealing device (375a, 375b, 575a, 575b) seals the receiving space (374a, 374b, 574) on that side in the direction of gravity.